The area code (phone code) 07529 is assigned to 3 locations in Germany. Mainly you reach landlines in Vogt (Baden-Württemberg).
Note for calls from abroad: In addition to the German country code (+49 or 0049) you can omit the foregoing zero of the dialling code for Vogt. So you can dial +497529... and add the number of the phone line you want to reach.
Tank you for the impressive cool water landscape photography art work